Mother plate for a flexible printed circuit film formed with a cutting pattern and display device provided with a flexible printed circuit film cut from the same

Abstract

The present invention relates to a mother plate for a flexible printed circuit film with a cutting mark and a display device provided with a flexible printed circuit film cut from the same. The display device includes a display panel for a panel unit displaying an image, a display panel electrode formed on the display panel, and a flexible printed circuit film electrically connected to a terminal of the display panel electrode. The flexible printed circuit film includes a wiring electrically connected to the display panel electrode, and a cutting mark having a cutting portion formed to be adjacent to the wiring in at least one edge of the flexible printed circuit film.

1. A display device comprising:
 a display panel for a panel unit displaying an image; 
 a display panel electrode formed on the display panel; and 
 a flexible printed circuit film electrically connected to a terminal of the display panel electrode, wherein the flexible printed circuit film includes:
 a plurality of wirings electrically connected to the display panel electrode and extending along one direction, and 
 a cutting mark indicating where the flexible printed circuit film is to be cut, the cutting mark formed in a corner of the flexible printed circuit film and having an edge coinciding with an edge of the flexible printed circuit film, wherein the cutting mark has a width extending along the direction of the width of the wirings and has a different shape than other layouts on the flexible printed circuit film. 
 
 
     
     
       2. The display device of  claim 1 , wherein the flexible printed circuit film further includes an align mark for aligning the flexible printed circuit film with the display panel electrode and having a shape different from the cutting mark. 
     
     
       3. The display device of  claim 2 , wherein the flexible printed circuit film has a dummy area that is not electrically connected to the display panel electrode, and the align mark is formed in the dummy area. 
     
     
       4. The display device of  claim 1 , wherein the flexible printed circuit film has a dummy area that is not electrically connected to the display panel electrode, and the cutting mark is formed in the dummy area. 
     
     
       5. The display device of  claim 4 , wherein the dummy area has a dummy wiring extending substantially parallel to the wiring, and the cutting mark is connected to the dummy wiring. 
     
     
       6. The display device of  claim 4 , wherein the dummy area has a dummy wiring extending substantially parallel to the wiring, and the cutting mark is spaced apart from the dummy wiring. 
     
     
       7. The display device of  claim 1 , wherein the flexible printed circuit film further includes:
 a base film receiving the wiring and the cutting mark; and 
 a cover film formed on the base film and partially covering the wiring. 
 
     
     
       8. The display device of  claim 7 , wherein the edge of the cutting portion and an edge of the wiring form a substantially straight line. 
     
     
       9. The display device of  claim 7 , wherein the cutting mark is formed at the edge of the base film. 
     
     
       10. The display device of  claim 7 , wherein the cutting mark is exposed on the base film together with the wiring. 
     
     
       11. The display device of  claim 1 , wherein the cutting mark has a rectangular shape. 
     
     
       12. The display device of  claim 1 , wherein the width of the cutting mark is greater than the width of the wiring. 
     
     
       13. The display device of  claim 1 , wherein a driver integrated circuit chip is mounted in the flexible printed circuit film. 
     
     
       14. The display device of  claim 1 , wherein the display panel electrode is electrically connected to a driver integrated circuit chip mounted in the display panel. 
     
     
       15. The display device of  claim 1 , further comprising a backlight assembly for supplying light to the display panel. 
     
     
       16. The display device of  claim 1 , wherein the length of the cutting mark along the direction parallel to the wiring is from about 100 μm to about 200 μm. 
     
     
       17. The display device of  claim 1 , further comprising:
 a color filter panel disposed on the display panel; and 
 a liquid crystal layer interposed between the display panel and the color filter panel, 
 wherein the display panel is a thin film transistor panel. 
 
     
     
       18. The display device of  claim 1 , wherein the display device is for a cellular phone. 
     
     
       19. A mother plate for a flexible printed circuit film comprising:
 a base film, and 
 a plurality of wiring units formed on the base film, 
 wherein each of the wiring units includes:
 a plurality of wirings formed on the base film with a predetermined pattern; and 
 a cutting mark formed adjacent to the wirings to visibly indicate a position of a cutting line for separating each of the wiring units from the mother plate and having a width extending along the direction of the width of the wirings. 
 
 
     
     
       20. The mother plate for a flexible printed circuit film of  claim 19 , wherein the cutting line is formed as a straight line along the width direction of the wiring. 
     
     
       21. The mother plate for a flexible printed circuit film of  claim 20 , wherein the cutting line passes through the center of the cutting mark. 
     
     
       22. The display device of  claim 1 , wherein the cutting mark is wider than the wiring. 
     
     
       23. The mother plate of  claim 19 , wherein the cutting mark is wider than each of the wirings. 
     
     
       24. The display device of  claim 1 , wherein the wiring is rectilinear throughout the flexible printed circuit film. 
     
     
       25. The mother plate of  claim 19 , wherein the mother plate is divided into blocks with each of the blocks having a cutting mark, further comprising a cover film having a substantially identical pattern in each of the blocks. 
     
     
       26. The display device of  claim 1 , wherein the cutting mark is positioned such that a portion of it remains on the flexible printed circuit film after cutting. 
     
     
       27. The mother plate of  claim 19 , wherein the cutting mark is positioned such that a portion of it remains on the wiring units after the wiring units are separated from the mother plate.